Home / 18,729.20-28,058.16-9,968.24

Finding the Fourth Proportional to 18,729.20, 28,058.16 and 9,968.24

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Solution

The fourth proportional to 18,729.20, 28,058.16 and 9,968.24 is: 14,933.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.20 : 28,058.16 = 9,968.24 : x
  2. Step 2: Convert to fraction form
    18,729.20/28,058.16 = 9,968.24/x
  3. Step 3: Cross multiply
    18,729.20x = 28,058.16 × 9,968.24
  4. Step 4: Simplify right side
    18,729.20x = 279,690,472.84
  5. Step 5: Solve for x
    x = 279,690,472.84/18,729.20
  6. Step 6: Final answer
    x = 14,933.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.